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on the principle and applied to a post, B, substantially as described.

- @mitch gieten sttmtt fitte cALvIN n.. PAINE, or" rEovmENcE, RHODE ISLAND, AssIGNoR 'ro HIM-- sELr1 AND WILLIAM E. IIILToN, or SAME PLACE.

Letters Patent Nor-53,932, dated April 16, 1867.

GATES.

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TOYALL PERSONS T() WHOM THESE PRESENTS SHALL COME:

Be it known that I, CALVIN H. PAXNE, of the city and county of Providence, and State of Rhode Island, haveinvented an improved Self-Operating Folding Gate; and do hereby declare the same to be fully described in thefollowing specication, and represented in the accompanying drawings, Vof which-l Figure 1 is a top View of my invention.

Figure 2, a transverse section ofit, taken through the gate and its posts.

Figure 3 is an underside View; and

Figure 4, a longitudinal section of the series of gate operative levers.

In such drawings, A denotes the gate and B and C its two posts, each of such posts being cnambered, as shown at a b, from top to bottom, and both chambers being made to open inwards, or toward each other, in order that they may receive the gate and allow of its movements both into and out of them, or across the space between the posts, the gate, when closely folded together, being drawn wholly within one of the-chambers or one of such posts. The gate is constructed on the principle of the well-known lazy-tongs, that is to say, it consists of two series of parallelrbars c c c, lite., d d d, ttc., those of one series being parallel to each other, and arranged so as to cross those of the other obliquely, the bars of the latter series being also parallel to one another. A joint pin, e, at each crossingof any two of the bars, goes through such bars and a separating block or washer, x, arranged between the bars and `at the crossing. This washer is `to keep the bars apart so as to prevent ice from accumulating between them so as to impede the working of the gate. The series of bars, so connected, can be either stretched asunder or contracted, as occasion may require. The gate, so made, is placed within the chamber of one of the posts, and is connected to the post by a pin, g, which goes through the post.' and the foot or lower part of one of the bars of' the gate. Above its connection with the post, and at the upper part of the gute, suchgate is jointed to an upright connection-piece, z, which extends into and below the post B. The connection-piece h, at its foot, is jointed to two oblique levers D D, arranged with respect to the gate and the roadway E, (running between the posts,) in manner as represented in the drawings. Each of the levers D D is jointed to one of two other levers F F, all the levers, D D and F F, being arranged below the surface of the roadway and in a suitableh chamber, G, their fulcra being exhibited at z'z'and Ic c. Each lever plays in a vertical plane, going through it lengthwise, the two levers F F being disposed in line with each other, they being on opposite sides of, and at equal distances frorn,ithe gate. Each lever D, at each of its opposite ends, is provided with a T-pieee or projection, Z, which extends up through the top of the chamber G and into the patlrwhich one or all the wheels on one side of the carriage would take in approaching the gate for going through and from it. If we suppose the gate to be closed or extended from post to post, and a carriage is approaching Vit on either side of. it with the intention of passing through the gate-opening, the carriage will pass over one of the higher `T-pieces and, by its pressure thereon, will put in motion all the levers sov as to .cause the gate to be opened or contracted. After the carriage may have passed the gate the wheel or wheels will pass over the higher T-piece, approached by it, and by depressing such will so operate all the levers as to effect the `expansion and closing of the gate or its projection across the opening 4or space between the two posts. i

What I claim as my invention, is- V The combination of the gate or lazy-tongsand mechanism for opening and closing it by means of a carria-ge, substantially as described.

I also claiinV the combination as well as the arrangement ofthe two sets of lovers D D and F F, the connection-piece tand the series of T-pieces Z, the whole being for operating as specified; the gate constructed CALVIN H. PAINE.

Witnesses:

R. H. EDDY, Geo. H. ANDREws.` 

